.classes-box {
    margin: 0 20px 10px;
    /*{# 上 左右 下 #} */
    border-radius: 14px;
    box-shadow: rgb(99, 99, 99, 0.2) 0 2px 8px 0;
    display: flex;
    padding: 20px;
}

.classes-box li {
    height: 20px;
    margin-right: 40px;
    color: darkslateblue;
}

.classes-box li a {
    display: flex;
    margin-bottom: auto;
    border-radius: 10px;
    margin-right: 2em;
}